TY - JOUR
T1 - Flow and heat transfer in compression mold filling
AU - Lee, Ching Chih
AU - Tucker, Charles L.
N1 - Funding Information:
This work was supportedb y the National Science Foundation under Grant No. MEA81-12027. The authors are gratefully acknowledget he helpful advice and commentsf rom memberso f the Industrial Advisory Board of this project which include the Ford Motor Company, GenCorp, Inc., General Motors Corporation, Owens-ComingF iberglas Corporation, and PPG Industries.W e are also gratefult o Fluid Dynamics International for making FIDAP available.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1987
Y1 - 1987
N2 - The interaction between heat transfer and flow through temperature-dependent viscosity during compression molding of a cold charge in a hot mold is studied by numerical simulation of two-dimensional cases. The finite-element method is used to solve the equations of motion and energy with a mesh which conforms at every instant to the shape of the charge. The results show that under typical operating conditions a thin layer of warm, low viscosity fluid at the mold surface lubricates the remainder of the charge, which undergoes nearly a planar elongational deformation. For material properties and operating conditions typical of the compression molding of sheet molding compound, very little preferential flow of the material near the mold surface is predicted. The results support the assumption of a flat velocity profile in nonisothermal compression molding used by several workers, and explain the success of some isothermal mold-filling models at predicting mold-filling patterns for nonisothermal cases.
AB - The interaction between heat transfer and flow through temperature-dependent viscosity during compression molding of a cold charge in a hot mold is studied by numerical simulation of two-dimensional cases. The finite-element method is used to solve the equations of motion and energy with a mesh which conforms at every instant to the shape of the charge. The results show that under typical operating conditions a thin layer of warm, low viscosity fluid at the mold surface lubricates the remainder of the charge, which undergoes nearly a planar elongational deformation. For material properties and operating conditions typical of the compression molding of sheet molding compound, very little preferential flow of the material near the mold surface is predicted. The results support the assumption of a flat velocity profile in nonisothermal compression molding used by several workers, and explain the success of some isothermal mold-filling models at predicting mold-filling patterns for nonisothermal cases.
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U2 - 10.1016/0377-0257(87)80040-X
DO - 10.1016/0377-0257(87)80040-X
M3 - Article
AN - SCOPUS:0023365110
SN - 0377-0257
VL - 24
SP - 245
EP - 264
JO - Journal of Non-Newtonian Fluid Mechanics
JF - Journal of Non-Newtonian Fluid Mechanics
IS - 3
ER -